quattroworld.com Forums: Rundown of the 3 different C4 Alarm/Central Locking Systems (Pumps, Keys, and Remotes)
How to" Central locking pump removal and motor change. - A8 Parts Forum
Audi central locking system not working / Audi door central locking problem - YouTube
B1 Audi A4 100 Central Locking Vacuum Pump 4a0862257c for sale online | eBay
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M59 Audi A4 B5 A6 Central Locking Pump Control Unit 4A0862257C | eBay
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VWvortex Forums: DIY Central Locking.
AUDI A4 B5 CENTRAL LOCKING VACUUM PUMP ASSEMBLY UNIT, 8L0862257, OEM | #1787500110
